It depends. I’m on two instances, sopuli and beehaw. Both of them are really welcoming and cool, and I can interact with people without worrying about being bullied or harassed or attacked by random trolls just because they don’t like what I say (and trust me, suffering those actions while being neurodivergent is way worse than suffering those actions while being neurotypical).
But I think that more than 70% of the content I see comes from one single instance. Excluding beehaw (they defederated that other instance, and I agree with that), I think that sopuli also has similar communities that are like abandoned or with low amount of content. That’s something I don’t like.